From d8a766c63a3f70cb1396ba0a1561c65d5dbf9145 Mon Sep 17 00:00:00 2001 From: Herbert Xu Date: Tue, 3 Oct 2023 11:43:25 +0800 Subject: crypto: ccm - Only access common skcipher fields on spawn As skcipher spawns may be of the type lskcipher, only the common fields may be accessed. This was already the case but use the correct helpers to make this more obvious. Signed-off-by: Herbert Xu --- crypto/ccm.c | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-) diff --git a/crypto/ccm.c b/crypto/ccm.c index a9453129..7af89a5b 100644 --- a/crypto/ccm.c +++ b/crypto/ccm.c @@ -447,10 +447,10 @@ static int crypto_ccm_create_common(struct crypto_template *tmpl, const char *ctr_name, const char *mac_name) { + struct skcipher_alg_common *ctr; u32 mask; struct aead_instance *inst; struct ccm_instance_ctx *ictx; - struct skcipher_alg *ctr; struct hash_alg_common *mac; int err; @@ -478,13 +478,12 @@ static int crypto_ccm_create_common(struct crypto_template *tmpl, ctr_name, 0, mask); if (err) goto err_free_inst; - ctr = crypto_spawn_skcipher_alg(&ictx->ctr); + ctr = crypto_spawn_skcipher_alg_common(&ictx->ctr); /* The skcipher algorithm must be CTR mode, using 16-byte blocks. */ err = -EINVAL; if (strncmp(ctr->base.cra_name, "ctr(", 4) != 0 || - crypto_skcipher_alg_ivsize(ctr) != 16 || - ctr->base.cra_blocksize != 1) + ctr->ivsize != 16 || ctr->base.cra_blocksize != 1) goto err_free_inst; /* ctr and cbcmac must use the same underlying block cipher. */ @@ -507,7 +506,7 @@ static int crypto_ccm_create_common(struct crypto_template *tmpl, inst->alg.base.cra_alignmask = mac->base.cra_alignmask | ctr->base.cra_alignmask; inst->alg.ivsize = 16; - inst->alg.chunksize = crypto_skcipher_alg_chunksize(ctr); + inst->alg.chunksize = ctr->chunksize; inst->alg.maxauthsize = 16; inst->alg.base.cra_ctxsize = sizeof(struct crypto_ccm_ctx); inst->alg.init = crypto_ccm_init_tfm; -- cgit v1.2.3